1225340009 has 2 divisors, whose sum is σ = 1225340010. Its totient is φ = 1225340008.

The previous prime is 1225339993. The next prime is 1225340027. The reversal of 1225340009 is 9000435221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1161787225 + 63552784 = 34085^2 + 7972^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225340009 - 2⁴ = 1225339993 is a prime.

It is a super-2 number, since 2×1225340009² = 3002916275312240162, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1225340009.

It is not a weakly prime, because it can be changed into another prime (1225340099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612670004 + 612670005.

It is an arithmetic number, because the mean of its divisors is an integer number (612670005).

Almost surely, 2^1225340009 is an apocalyptic number.

It is an amenable number.

1225340009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225340009 is an equidigital number, since it uses as much as digits as its factorization.

1225340009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1225340009 is about 35004.8569344313. The cubic root of 1225340009 is about 1070.0864660670.

The spelling of 1225340009 in words is "one billion, two hundred twenty-five million, three hundred forty thousand, nine".